text_view: Remove last paragraph bottom margin. (#660)

Now, we can be easy to use TextView for 1 line text.

## Break Changes

- Removed `inline` method by previous #649 added, this is not needed.

crates/story/src/switch_story.rs

@@ -218,7 +218,6 @@ impl Render for SwitchStory {
                                             "The [long long label](https://github.com) text used markdown, \
                                              it should wrap when the text is too long.",
                                         )
-                                        .inline(),
                                     ),
                             ),
                     ),

crates/ui/src/text/element.rs

@@ -386,6 +386,7 @@ impl Node {
                                                 ordered: state.ordered,
                                                 todo: checked.is_some(),
                                             }),
+                                            true,
                                             text_view_style,
                                             window,
                                             cx,
@@ -399,6 +400,7 @@ impl Node {
                                         ordered: state.ordered,
                                         todo: checked.is_some(),
                                     }),
+                                    true,
                                     text_view_style,
                                     window,
                                     cx,
@@ -489,12 +491,13 @@ impl Node {
     pub(crate) fn render(
         self,
         list_state: Option<ListState>,
+        is_last_child: bool,
         text_view_style: &TextViewStyle,
         window: &mut Window,
         cx: &mut App,
     ) -> impl IntoElement {
         let in_list = list_state.is_some();
-        let mb = if in_list {
+        let mb = if in_list || is_last_child {
             rems(0.)
         } else {
             text_view_style.paragraph_gap
@@ -502,11 +505,14 @@ impl Node {
 
         match self {
             Node::Root { children } => div()
-                .children(
-                    children
-                        .into_iter()
-                        .map(|c| c.render(None, text_view_style, window, cx)),
-                )
+                .children({
+                    let children_len = children.len();
+
+                    children.into_iter().enumerate().map(move |(ix, c)| {
+                        let is_last_child = ix == children_len - 1;
+                        c.render(None, is_last_child, text_view_style, window, cx)
+                    })
+                })
                 .into_any_element(),
             Node::Paragraph(paragraph) => div().mb(mb).child(paragraph).into_any_element(),
             Node::Heading { level, children } => {

crates/ui/src/text/html.rs

@@ -160,7 +160,7 @@ impl Element for HtmlElement {
 
             let mut el = div()
                 .map(|this| match root {
-                    Ok(node) => this.child(node.render(None, &self.style, window, cx)),
+                    Ok(node) => this.child(node.render(None, true, &self.style, window, cx)),
                     Err(err) => this.child(
                         v_flex()
                             .gap_1()

crates/ui/src/text/markdown.rs

@@ -116,7 +116,7 @@ impl Element for MarkdownElement {
 
             let mut el = div()
                 .map(|this| match root {
-                    Ok(node) => this.child(node.render(None, &self.style, window, cx)),
+                    Ok(node) => this.child(node.render(None, true, &self.style, window, cx)),
                     Err(err) => this.child(
                         v_flex()
                             .gap_1()

crates/ui/src/text/text_view.rs

@@ -64,15 +64,6 @@ impl Default for TextViewStyle {
 }
 
 impl TextViewStyle {
-    /// Default style for inline text.
-    ///
-    /// This style has no paragraph gap.
-    pub fn inline() -> Self {
-        Self {
-            paragraph_gap: rems(0.),
-        }
-    }
-
     /// Set paragraph gap, default is 1 rem.
     pub fn paragraph_gap(mut self, gap: Rems) -> Self {
         self.paragraph_gap = gap;
@@ -106,11 +97,6 @@ impl TextView {
             Self::Html(el) => Self::Html(el.style(style)),
         }
     }
-
-    /// Set to use [`TextViewStyle::inline`].
-    pub fn inline(self) -> Self {
-        self.style(TextViewStyle::inline())
-    }
 }
 
 impl RenderOnce for TextView {